, and there is an active search going on at this time. >> reporter: police shot tamerlan tsarnaev. he was pronounced dead a short time later at an area hospital. >> this was a trauma arrest. multiple injuries, probably we believe a combination of blasts, potentially gunshot wounds. >> how many gunshot wounds? >> unable to count. >> multiple gunshots? >> yes. >> i'm sorry i didn't hear the rest of that. >> and probably a blast injury also. >> blast meaning what? >> an explosive device, possibly shrapnel, a thermal injury. >> can you describe where it was? >> it was pretty much throughout the trunk, it was multiple wounds. >> would it be consistent with perhaps a bomb strapped to the chest, would it be consistent with that? >> unclear. i think the medical examiner will be able to conclusively say that, but there were signs of more than just gunshot wounds. >> reporter: the brothers were of chechen heritage and came to the u.s. around ten years ago. a circuitous path took them through dagestan, a volatile region in southern russia. 26-year-old tamerlan reportedly was a hip-hop fan, and a gold gloves boxer.